unsecured
adjective /ˌʌnsɪˈkjʊəd/
  /ˌʌnsɪˈkjʊrd/
- if a debt or loan is unsecured, a person has arranged it without legally agreeing to give somebody valuable property if they cannot pay the money back- an unsecured personal loan of £15 000
 
- (of a person or company) having given somebody a loan without security (= an agreement that they will give you valuable property if they cannot pay the money back)- unsecured creditors
 
- not locked, guarded or protected- unsecured windows